Photos: Guide to the 2015 Grammy Awards

Katy Perry (nominated this year for pop vocal album and pop duo/group performance) will perform “By the Grace of God” during the Grammys ceremony.   (Michael Conroy / Associated Press)

Mary J. Blige and Sam Smith will be performing a duet during the Grammys ceremony. Blige is nominated for dance recording with Disclosure for “F For You.” Smith is one of the top nominated musicians of 2015, with six nods.  (Kevin Wolf / Invision / Associated Press; Lawrence K. Ho / Los Angeles Times)

With the help of Chris Martin, who has three nominations with his band Coldplay, Beck will perform a song from his Grammy-nominated album “Morning Phase.”  (Karl Walter, Christopher Polk / Getty Images)

Australian singer-songwriter Sia has four Grammy nominations this year, including record of the year. In 2013, she earned a nomination for rap/sung collaboration with “Wild Ones.”  (Mandel Ngen / AFP/Getty Images)

Herbie Hancock, John Mayer and Questlove will take the stage with Ed Sheeran.  (Clockwise from top left: Mark Von Holden / Invision / AP; Lawrence K. Ho / Los Angeles Times; Robin Marchant / Getty Images)

Juanes, nominated for Latin pop album, will perform.  (Alan Diaz / Associated Press)

Country music stars Brandy Clark and Dwight Yoakam will share the stage Grammy Awards night. Clark has two nominations (new artist, country album). Yoakam has won two Grammys out of 15 nominations (country vocal performance in 1994, and country collaboration with vocals in 1999).  (Ricardo DeAratanha / Los Angeles Times; Randee St. Nicholas)

Rihanna and Paul McCartney, along with Kanye West, are set for a world-premiere performance of Rihanna’s “Fourfiveseconds.”  (Top: Christopher Polk / Getty Images / Bottom: Dan Harr / Invision / Associated Press)

The 21-time Grammy winner is up for two awards this year: best rap/sung collaboration and best rap song for “Bound 2” with Charlie Wilson. He’ll perform solo and with Rihanna and Paul McCartney.  (Charles Sykes / Invision / Associated Press)

Tony Bennett has won 17 Grammy Awards, including a Grammy Lifetime Achievement Award. Lady Gaga, who has five Grammy accolades, is nominated this year with Bennett for traditional pop vocal album.  (Handout / Getty Images)

Jessie J earned her first Grammy nomination this year for the pop single “Bang Bang.” Tom Jones won the new-artist Grammy in 1966.  (Tim Boyles / Getty Images for iHeartMedia; Marco Grob)

Hozier received his first Grammy nomination this year for the single “Take Me to Church.” Annie Lennox has four wins out of 11 nominations, including one this year for her album “Nostalgia.”  (Genaro Molina / Los Angeles Times; Frederick M. Brown / Getty Images)

With Maroon 5, Adam Levine has received 11 Grammy nominations and won three. Gwen Stefani has received nine and won one.  (Kevin Kane / Getty Images for iHeartMedia; Wally Skalij / Los Angeles Times)

Seven-time Grammy winner Pharrell Williams is one of the top nominees this year with six. Williams is up for pop solo performance, music video, urban contemporary album and album of the year for three albums (for his own album and as producer on two others).   (Luis Sinco / Los Angeles Times)

Sam Smith, one of this year’s top nominees, will be performing at the Grammys for the first time this year. His six nominations are for new artist, pop vocal album, pop solo performance, song of the year, record of the year and album of the year.  (Lawrence K. Ho / Los Angeles Times)

Usher, who has won eight Grammys from his previous 22 nominations, has earned four more nominations this year. He is up against himself with two nominations in both the R&B performance and R&B song categories.   (Luis Sinco / Los Angeles Times)

Miranda Lambert, who won the female country performance Grammy in 2011, has four nominations this year for country solo performance, country duo/group performance, country song and country album.   (Jason Merritt / Getty Images)

Two-time Grammy winner Common, left, will take the stage with nine-time winner John Legend to perform their Golden Globe-winning song “Glory,” from “Selma.” Common is also a nominee this year for rap/sung collaboration, while Legend is nominated for pop solo performance and rap song.   (Robert Gauthier, Allen J. Schaben / Los Angeles Times)

Ariana Grande, who will perform during the live telecast, is up for two awards this year: pop duo/group performance and pop vocal album.  (Jamie McCarthy / Getty Images for iHeartMedia)

Ed Sheeran, who will perform during the live telecast, holds three nominations: album of the year, pop vocal album and song written for visual media.   (Jason Merritt / Getty Images for iHeartMedia)

Eric Church, who will perform during the live telecast, is nominated for four awards this year: country solo performance, country song, country duo/group performance and country album.  (Wade Payne / Invision)

AC/DC, who will perform during the live telecast, has received seven nominations, winning a Grammy in 2010 for hard rock performance.   (Jeff Zelevansky / Associated Press)